An efficient intra mode selection scheme for inter frame coding in H.264|AVC video coding

An efficient intra mode decision scheme is proposed to reduce the computational complexity of inter frame coding in for the H.264/AVC. To decrease this computational burden, we propose an adaptive thresholding method based on distribution characteristics of the sum of the absolute differences (SAD) for the best inter mode when the intra mode is the final coding mode. We also include a simple refinement process by using spatial correlation between neighbouring marcoblocks (MBs) and the current MB. The performance of the proposed scheme is presented in terms of reduction in encoding times and PSNR values, and the increments in bit amounts.